DockerCLI/docs/reference/commandline/service_update.md

service update

Update a service

Options

Name	Type	Default	Description
--args	command		Service command args
--cap-add	list		Add Linux capabilities
--cap-drop	list		Drop Linux capabilities
--config-add	config		Add or update a config file on a service
--config-rm	list		Remove a configuration file
--constraint-add	list		Add or update a placement constraint
--constraint-rm	list		Remove a constraint
--container-label-add	list		Add or update a container label
--container-label-rm	list		Remove a container label by its key
--credential-spec	credential-spec		Credential spec for managed service account (Windows only)
-d, --detach	bool		Exit immediately instead of waiting for the service to converge
--dns-add	list		Add or update a custom DNS server
--dns-option-add	list		Add or update a DNS option
--dns-option-rm	list		Remove a DNS option
--dns-rm	list		Remove a custom DNS server
--dns-search-add	list		Add or update a custom DNS search domain
--dns-search-rm	list		Remove a DNS search domain
--endpoint-mode	string		Endpoint mode (vip or dnsrr)
--entrypoint	command		Overwrite the default ENTRYPOINT of the image
--env-add	list		Add or update an environment variable
--env-rm	list		Remove an environment variable
--force	bool		Force update even if no changes require it
--generic-resource-add	list		Add a Generic resource
--generic-resource-rm	list		Remove a Generic resource
--group-add	list		Add an additional supplementary user group to the container
--group-rm	list		Remove a previously added supplementary user group from the container
--health-cmd	string		Command to run to check health
--health-interval	duration		Time between running the check (ms|s|m|h)
--health-retries	int	0	Consecutive failures needed to report unhealthy
--health-start-interval	duration		Time between running the check during the start period (ms|s|m|h)
--health-start-period	duration		Start period for the container to initialize before counting retries towards unstable (ms|s|m|h)
--health-timeout	duration		Maximum time to allow one check to run (ms|s|m|h)
--host-add	list		Add a custom host-to-IP mapping (host:ip)
--host-rm	list		Remove a custom host-to-IP mapping (host:ip)
--hostname	string		Container hostname
--image	string		Service image tag
--init	bool		Use an init inside each service container to forward signals and reap processes
--isolation	string		Service container isolation mode
--label-add	list		Add or update a service label
--label-rm	list		Remove a label by its key
--limit-cpu	decimal		Limit CPUs
--limit-memory	bytes	0	Limit Memory
--limit-pids	int64	0	Limit maximum number of processes (default 0 = unlimited)
--log-driver	string		Logging driver for service
--log-opt	list		Logging driver options
--max-concurrent	uint		Number of job tasks to run concurrently (default equal to --replicas)
--mount-add	mount		Add or update a mount on a service
--mount-rm	list		Remove a mount by its target path
--network-add	network		Add a network
--network-rm	list		Remove a network
--no-healthcheck	bool		Disable any container-specified HEALTHCHECK
--no-resolve-image	bool		Do not query the registry to resolve image digest and supported platforms
--oom-score-adj	int64	0	Tune host's OOM preferences (-1000 to 1000)
--placement-pref-add	pref		Add a placement preference
--placement-pref-rm	pref		Remove a placement preference
--publish-add	port		Add or update a published port
--publish-rm	port		Remove a published port by its target port
-q, --quiet	bool		Suppress progress output
--read-only	bool		Mount the container's root filesystem as read only
--replicas	uint		Number of tasks
--replicas-max-per-node	uint64	0	Maximum number of tasks per node (default 0 = unlimited)
--reserve-cpu	decimal		Reserve CPUs
--reserve-memory	bytes	0	Reserve Memory
--restart-condition	string		Restart when condition is met (none, on-failure, any)
--restart-delay	duration		Delay between restart attempts (ns|us|ms|s|m|h)
--restart-max-attempts	uint		Maximum number of restarts before giving up
--restart-window	duration		Window used to evaluate the restart policy (ns|us|ms|s|m|h)
--rollback	bool		Rollback to previous specification
--rollback-delay	duration	0s	Delay between task rollbacks (ns|us|ms|s|m|h)
--rollback-failure-action	string		Action on rollback failure (pause, continue)
--rollback-max-failure-ratio	float	0	Failure rate to tolerate during a rollback
--rollback-monitor	duration	0s	Duration after each task rollback to monitor for failure (ns|us|ms|s|m|h)
--rollback-order	string		Rollback order (start-first, stop-first)
--rollback-parallelism	uint64	0	Maximum number of tasks rolled back simultaneously (0 to roll back all at once)
--secret-add	secret		Add or update a secret on a service
--secret-rm	list		Remove a secret
--stop-grace-period	duration		Time to wait before force killing a container (ns|us|ms|s|m|h)
--stop-signal	string		Signal to stop the container
--sysctl-add	list		Add or update a Sysctl option
--sysctl-rm	list		Remove a Sysctl option
-t, --tty	bool		Allocate a pseudo-TTY
--ulimit-add	ulimit		Add or update a ulimit option
--ulimit-rm	list		Remove a ulimit option
--update-delay	duration	0s	Delay between updates (ns|us|ms|s|m|h)
--update-failure-action	string		Action on update failure (pause, continue, rollback)
--update-max-failure-ratio	float	0	Failure rate to tolerate during an update
--update-monitor	duration	0s	Duration after each task update to monitor for failure (ns|us|ms|s|m|h)
--update-order	string		Update order (start-first, stop-first)
--update-parallelism	uint64	0	Maximum number of tasks updated simultaneously (0 to update all at once)
-u, --user	string		Username or UID (format: <name|uid>[:<group|gid>])
--with-registry-auth	bool		Send registry authentication details to swarm agents
-w, --workdir	string		Working directory inside the container

Description

Updates a service as described by the specified parameters. The parameters are the same as docker service create. Refer to the description there for further information.

Normally, updating a service will only cause the service's tasks to be replaced with new ones if a change to the service requires recreating the tasks for it to take effect. For example, only changing the --update-parallelism setting will not recreate the tasks, because the individual tasks are not affected by this setting. However, the --force flag will cause the tasks to be recreated anyway. This can be used to perform a rolling restart without any changes to the service parameters.

[!NOTE] This is a cluster management command, and must be executed on a swarm manager node. To learn about managers and workers, refer to the Swarm mode section in the documentation.

Examples

Update a service

$ docker service update --limit-cpu 2 redis

Perform a rolling restart with no parameter changes

$ docker service update --force --update-parallelism 1 --update-delay 30s redis

In this example, the --force flag causes the service's tasks to be shut down and replaced with new ones even though none of the other parameters would normally cause that to happen. The --update-parallelism 1 setting ensures that only one task is replaced at a time (this is the default behavior). The --update-delay 30s setting introduces a 30 second delay between tasks, so that the rolling restart happens gradually.

Add or remove mounts (--mount-add, --mount-rm)

Use the --mount-add or --mount-rm options add or remove a service's bind mounts or volumes.

The following example creates a service which mounts the test-data volume to /somewhere. The next step updates the service to also mount the other-volume volume to /somewhere-elsevolume, The last step unmounts the /somewhere mount point, effectively removing the test-data volume. Each command returns the service name.

• The --mount-add flag takes the same parameters as the --mount flag on service create. Refer to the volumes and bind mounts section in the service create reference for details.

• The --mount-rm flag takes the target path of the mount.

$ docker service create \
    --name=myservice \
    --mount type=volume,source=test-data,target=/somewhere \
    nginx:alpine

myservice

$ docker service update \
    --mount-add type=volume,source=other-volume,target=/somewhere-else \
    myservice

myservice

$ docker service update --mount-rm /somewhere myservice

myservice

Add or remove published service ports (--publish-add, --publish-rm)

Use the --publish-add or --publish-rm flags to add or remove a published port for a service. You can use the short or long syntax discussed in the docker service create reference.

The following example adds a published service port to an existing service.

$ docker service update \
  --publish-add published=8080,target=80 \
  myservice

Add or remove network (--network-add, --network-rm)

Use the --network-add or --network-rm flags to add or remove a network for a service. You can use the short or long syntax discussed in the docker service create reference.

The following example adds a new alias name to an existing service already connected to network my-network:

$ docker service update \
  --network-rm my-network \
  --network-add name=my-network,alias=web1 \
  myservice

Roll back to the previous version of a service (--rollback)

Use the --rollback option to roll back to the previous version of the service.

This will revert the service to the configuration that was in place before the most recent docker service update command.

The following example updates the number of replicas for the service from 4 to 5, and then rolls back to the previous configuration.

$ docker service update --replicas=5 web

web

$ docker service ls

ID            NAME  MODE        REPLICAS  IMAGE
80bvrzp6vxf3  web   replicated  0/5       nginx:alpine

The following example rolls back the web service:

$ docker service update --rollback web

web

$ docker service ls

ID            NAME  MODE        REPLICAS  IMAGE
80bvrzp6vxf3  web   replicated  0/4       nginx:alpine

Other options can be combined with --rollback as well, for example, --update-delay 0s to execute the rollback without a delay between tasks:

$ docker service update \
  --rollback \
  --update-delay 0s
  web

web

Services can also be set up to roll back to the previous version automatically when an update fails. To set up a service for automatic rollback, use --update-failure-action=rollback. A rollback will be triggered if the fraction of the tasks which failed to update successfully exceeds the value given with --update-max-failure-ratio.

The rate, parallelism, and other parameters of a rollback operation are determined by the values passed with the following flags:

• --rollback-delay
• --rollback-failure-action
• --rollback-max-failure-ratio
• --rollback-monitor
• --rollback-parallelism

For example, a service set up with --update-parallelism 1 --rollback-parallelism 3 will update one task at a time during a normal update, but during a rollback, 3 tasks at a time will get rolled back. These rollback parameters are respected both during automatic rollbacks and for rollbacks initiated manually using --rollback.

Add or remove secrets (--secret-add, --secret-rm)

Use the --secret-add or --secret-rm options add or remove a service's secrets.

The following example adds a secret named ssh-2 and removes ssh-1:

$ docker service update \
    --secret-add source=ssh-2,target=ssh-2 \
    --secret-rm ssh-1 \
    myservice

Update services using templates

Some flags of service update support the use of templating. See service create for the reference.

Specify isolation mode on Windows (--isolation)

service update supports the same --isolation flag as service create See service create for the reference.

Updating Jobs

When a service is created as a job, by setting its mode to replicated-job or to global-job when doing service create, options for updating it are limited.

Updating a Job immediately stops any Tasks that are in progress. The operation creates a new set of Tasks for the job and effectively resets its completion status. If any Tasks were running before the update, they are stopped, and new Tasks are created.

Jobs cannot be rolled out or rolled back. None of the flags for configuring update or rollback settings are valid with job modes.

To run a job again with the same parameters that it was run previously, it can be force updated with the --force flag.

Related commands

• service create
• service inspect
• service logs
• service ls
• service ps
• service rm
• service rollback
• service scale